Method and cell for controlling the power factor of a power...

Details Method and cell for controlling the power factor of a power... Method and cell for controlling the power factor of a power...

2006-11-17

2010-12-14

Owens, Douglas W (Department: 2821)

Electric lamp and discharge devices: systems

Pulsating or a.c. supply

With power factor control device

C315S307000, C315S291000, C323S284000, C323S288000, C323S289000

Reexamination Certificate

active

07852014

ABSTRACT:
A method and system controls the power factor associated with a power supply line. The system includes a control circuit having a power factor control cell connected to the power supply line. The power factor control is performed by modulating the conduction time of a bipolar transistor in the control cell using the storage time of the bipolar transistor, and by regulating the modulation of the conduction time by feedback-driving a control terminal of the bipolar transistor.

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Eissa, M.O., et al., A Fast Analog Controller For A Unity-Power-Factor AC/DC Converter, APEC 1994 Conference, IEEE, vol. 13., pp. 551-555, Xp010118522, Feb. 1994.
Masuda, Tetsuhiko, TDK's Technology Reduces Harmonic Current Distortion, JEE, vol. 30, No. 319, XP000377862, pp. 70-73, Jul. 1, 1993.

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